/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.client.gui.panel;

import java.awt.event.ActionEvent;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.logging.Logger;

import javax.swing.JButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import net.miginfocom.swing.MigLayout;

import net.sf.freecol.client.FreeColClient;
import net.sf.freecol.common.io.FreeColDirectories;


/**
 * This is the panel that pops up when an error needs to be reported.
 */
public final class ErrorPanel extends FreeColPanel
{

    @SuppressWarnings( "unused" )
    private static final Logger logger = Logger.getLogger( ErrorPanel.class.getName( ) );

    private static final String SHOW = "show";


    /**
     * Creates a panel to display the given error message.
     *
     * @param freeColClient The <code>FreeColClient</code> for the game.
     * @param message The error message to display in this error panel.
     */
    public ErrorPanel( FreeColClient freeColClient, String message )
    {
        super( freeColClient, new MigLayout( ) );

        JButton showButton = Utility.localizedButton( "errorPanel.showLogFile" );
        showButton.setActionCommand( SHOW );
        showButton.addActionListener( this );

        add( Utility.getDefaultTextArea( message, 40 ), "wrap 20" );
        add( okButton, "split 2, tag ok" );
        add( showButton );
    }

    /**
     * Creates an error panel containing the log file.
     *
     * @param freeColClient The <code>FreeColClient</code> for the game.
     */
    public ErrorPanel( FreeColClient freeColClient )
    {
        super( freeColClient, new MigLayout( ) );

        File logFile = new File( FreeColDirectories.getLogFilePath( ) );
        byte[] buffer = new byte[ ( int ) logFile.length( ) ];
        String message = null;
        try (
                FileInputStream fis = new FileInputStream( logFile );
                BufferedInputStream logFileStream = new BufferedInputStream( fis );
        )
        {
            logFileStream.read( buffer );
            message = new String( buffer, "UTF-8" );
        }
        catch ( Exception e )
        {
            ;// ignore
        }

        JTextArea textArea = Utility.getDefaultTextArea( message, 40 );
        textArea.setFocusable( true );
        textArea.setEditable( false );

        JScrollPane scrollPane = new JScrollPane( textArea,
                                                  JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                                                  JScrollPane.HORIZONTAL_SCROLLBAR_NEVER );
        scrollPane.getViewport( ).setOpaque( false );

        add( scrollPane, "height 200:200:, wrap 20" );
        add( okButton, "tag ok" );
    }


    // Interface ActionListener

    /**
     * {@inheritDoc}
     */
    @Override
    public void actionPerformed( ActionEvent ae )
    {
        final String command = ae.getActionCommand( );
        if ( SHOW.equals( command ) )
        {
            getGUI( ).showLogFilePanel( );
        }
        else
        {
            super.actionPerformed( ae );
        }
    }
}
